Hitachi TRQ-707

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Brand: Hitachi

The Hitachi TRQ-707 is an engineering calculator that was introduced in the late 1970s. It was designed for use in various engineering and scientific applications, and it was particularly popular in the fields of electrical and mechanical engineering.The TRQ-707 featured a big, bright LCD display with a 4-digit by 6-digit dual-line format, allowing users to view multiple sets of data simultaneously. It also included a wide range of functions, such as trigonometric, logarithmic, and exponential calculations, as well as algebraic and analytic capabilities.A unique feature of the TRQ-707 was the inclusion of a built-in RF link, which enabled the user to communicate with other TRQ-707 calculators over a distance of up to several hundred feet. This interface facilitated data synchronization between multiple devices, making it an attractive option for engineering teams working on large-scale projects.Overall, the Hitachi TRQ-707 was a high-end engineering calculator that was well-documented and supported by a variety of additional resources, including instruction manuals, programming manuals, and user guides. Its advanced capabilities and versatility make it a collectible item for vintage computer enthusiasts today.